11012021191 has 2 divisors, whose sum is σ = 11012021192. Its totient is φ = 11012021190.

The previous prime is 11012021117. The next prime is 11012021219. The reversal of 11012021191 is 19112021011.

11012021191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11012021191 - 2⁷ = 11012021063 is a prime.

It is a super-2 number, since 2×11012021191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012022191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506010595 + 5506010596.

It is an arithmetic number, because the mean of its divisors is an integer number (5506010596).

Almost surely, 2^11012021191 is an apocalyptic number.

11012021191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012021191 is an equidigital number, since it uses as much as digits as its factorization.

11012021191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 11012021191 in words is "eleven billion, twelve million, twenty-one thousand, one hundred ninety-one".